Method for Purifying High-purity Aluminum by Directional Solidification and Its Melting Furnace

A technology for directional solidification and smelting furnaces, applied in furnaces, crucible furnaces, furnace components, etc., can solve the problems of high cost, low efficiency and high energy consumption, and achieve the effects of large processing capacity, high efficiency and low energy consumption

Active Publication Date: 2011-12-14
乌鲁木齐众航新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for directional solidification and purification of high-purity aluminum and its melting furnace, which overcomes the above-mentioned deficiencies in the prior art and can obtain 5N to 6N High-purity aluminum can effectively solve the problems of high-purity aluminum products such as low purification effect, low efficiency, high energy consumption, and high cost. It has the advantages of low energy consumption, large processing capacity, high efficiency, and high product purity, and can be used in large quantities Production of high-purity aluminum

Method used

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  • Method for Purifying High-purity Aluminum by Directional Solidification and Its Melting Furnace
  • Method for Purifying High-purity Aluminum by Directional Solidification and Its Melting Furnace

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Effect test

Embodiment 1

[0029] Embodiment 1, the method for purifying high-purity aluminum by directional solidification is carried out according to the following steps:

[0030] The first step is to select materials, select aluminum raw materials with a purity of 4N to 4N5, and physically clean the surface of the above-mentioned aluminum raw materials;

[0031] In the second step, smelting, put the aluminum raw material prepared in the first step into the refining container of the smelting furnace, heat the aluminum raw material to 670°C to 730°C, and melt all the aluminum raw material to obtain aluminum liquid;

[0032] The third step is solidification and purification. The aluminum liquid obtained in the second step is allowed to stand at 670°C to 730°C for 7 minutes to 80 minutes; then the bottom of the melting furnace is cooled, and the aluminum liquid is heated to make the aluminum liquid temperature Control the temperature from low to high in the range of 660°C to 700°C from the crysta...

Embodiment 2

[0034] Embodiment 2, the method for purifying high-purity aluminum by directional solidification is carried out according to the following steps:

[0035] The first step is to select materials, select aluminum raw materials with a purity of 4N5 to 5N, and physically clean the surface of the above aluminum raw materials;

[0036] In the second step, smelting, put the aluminum raw material prepared in the first step into the refining container of the smelting furnace, heat the aluminum raw material to 670°C or 730°C, and melt all the aluminum raw material to obtain aluminum liquid;

[0037] The third step is solidification and purification. The aluminum liquid obtained in the second step is allowed to stand at 670°C or 730°C for 7 minutes or 80 minutes; Control the range of 660°C or 700°C from low to high from the crystallization side up, crystallize from the bottom of the furnace upward, and obtain a crystallized ingot after 1 hour or 8 hours. During the crystallization...

Embodiment 3

[0039] Embodiment 3 is different from Embodiment 1 and Embodiment 2 in that: the stirring paddle of the stirrer in Embodiment 3 is stirred by rotating.

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Abstract

The invention discloses a method for purifying high-pure aluminum by directional solidification and a smelting furnace used in the same. The method for purifying high-pure aluminium by directional solidification comprises the following steps: 1. sorting; 2. smelting; 3. solidifying for purifying; and 4. obtaining a finished product. The smelting furnace comprises a furnace shell, a heating device, a container, a stirring device and a cooling device, wherein the container is fixedly arranged in the furnace shell; at least one heating device is fixedly installed at interval from top to bottom between the furnace shell and the container; a furnace bottom below the container is provided with the cooling device; and a furnace bottom temperature measuring device is arranged between the cooling device and the furnace shell. The method disclosed by the invention has the advantages of low energy consumption, large treatment capacity, high efficiency and high product purity and can be used for producing 5N-6N high-purity aluminum in a large batch. The smelting furnace disclosed by the invention has reasonable and compact structure and is convenient to use. The heating device, the furnace bottom cooling device and the furnace bottom temperature measuring device are cooperated to greatly improve working efficiency so as to improve the quality of the purified high-purity aluminum.

Description

technical field [0001] The invention relates to the technical field of high-purity aluminum smelting and purification devices, and relates to a method for directional solidification and purification of high-purity aluminum and a melting furnace thereof, in particular to a method for directional solidification and purification of 5N to 6N high-purity aluminum and a melting furnace thereof. Background technique [0002] In the field of electronics industry, especially high-tech fields such as optoelectronic storage media, semiconductor devices, and superconducting cables, it is necessary to use 5N to 6N high-purity aluminum. There are two ways to express the purity of high-purity aluminum. One is to directly write the aluminum content or industry standard grades, such as 99.95%, 99.99%, AL99.993A%, etc.; the other is to use "number + N" or "number + N+Number” means, such as 4N means 99.99%, 4N6 means 99.996% and so on. Generally, when the specific detection elements are not s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B21/06C22B9/02
CPCB22D27/045F27B14/00C22B9/02C22B21/06F27B2014/002F27B14/06F27D27/00
Inventor 洪涛努力古·依明
Owner 乌鲁木齐众航新材料科技有限公司
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